2 * CRIS emulation for qemu: main translation routines.
4 * Copyright (c) 2008 AXIS Communications AB
5 * Written by Edgar E. Iglesias.
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 * The condition code translation is in need of attention.
39 #include "crisv32-decode.h"
40 #include "qemu-common.h"
47 #define DIS(x) if (loglevel & CPU_LOG_TB_IN_ASM) x
53 #define BUG() (gen_BUG(dc, __FILE__, __LINE__))
54 #define BUG_ON(x) ({if (x) BUG();})
58 /* Used by the decoder. */
59 #define EXTRACT_FIELD(src, start, end) \
60 (((src) >> start) & ((1 << (end - start + 1)) - 1))
62 #define CC_MASK_NZ 0xc
63 #define CC_MASK_NZV 0xe
64 #define CC_MASK_NZVC 0xf
65 #define CC_MASK_RNZV 0x10e
67 static TCGv_ptr cpu_env;
68 static TCGv cpu_R[16];
69 static TCGv cpu_PR[16];
73 static TCGv cc_result;
78 static TCGv env_btaken;
79 static TCGv env_btarget;
82 #include "gen-icount.h"
84 /* This is the state at translation time. */
85 typedef struct DisasContext {
94 unsigned int zsize, zzsize;
103 int cc_size_uptodate; /* -1 invalid or last written value. */
105 int cc_x_uptodate; /* 1 - ccs, 2 - known | X_FLAG. 0 not uptodate. */
106 int flags_uptodate; /* Wether or not $ccs is uptodate. */
107 int flagx_known; /* Wether or not flags_x has the x flag known at
111 int clear_x; /* Clear x after this insn? */
112 int cpustate_changed;
113 unsigned int tb_flags; /* tb dependent flags. */
118 #define JMP_INDIRECT 2
119 int jmp; /* 0=nojmp, 1=direct, 2=indirect. */
124 struct TranslationBlock *tb;
125 int singlestep_enabled;
128 static void gen_BUG(DisasContext *dc, const char *file, int line)
130 printf ("BUG: pc=%x %s %d\n", dc->pc, file, line);
131 fprintf (logfile, "BUG: pc=%x %s %d\n", dc->pc, file, line);
132 cpu_abort(dc->env, "%s:%d\n", file, line);
135 static const char *regnames[] =
137 "$r0", "$r1", "$r2", "$r3",
138 "$r4", "$r5", "$r6", "$r7",
139 "$r8", "$r9", "$r10", "$r11",
140 "$r12", "$r13", "$sp", "$acr",
142 static const char *pregnames[] =
144 "$bz", "$vr", "$pid", "$srs",
145 "$wz", "$exs", "$eda", "$mof",
146 "$dz", "$ebp", "$erp", "$srp",
147 "$nrp", "$ccs", "$usp", "$spc",
150 /* We need this table to handle preg-moves with implicit width. */
151 static int preg_sizes[] = {
162 #define t_gen_mov_TN_env(tn, member) \
163 _t_gen_mov_TN_env((tn), offsetof(CPUState, member))
164 #define t_gen_mov_env_TN(member, tn) \
165 _t_gen_mov_env_TN(offsetof(CPUState, member), (tn))
167 static inline void t_gen_mov_TN_reg(TCGv tn, int r)
170 fprintf(stderr, "wrong register read $r%d\n", r);
171 tcg_gen_mov_tl(tn, cpu_R[r]);
173 static inline void t_gen_mov_reg_TN(int r, TCGv tn)
176 fprintf(stderr, "wrong register write $r%d\n", r);
177 tcg_gen_mov_tl(cpu_R[r], tn);
180 static inline void _t_gen_mov_TN_env(TCGv tn, int offset)
182 if (offset > sizeof (CPUState))
183 fprintf(stderr, "wrong load from env from off=%d\n", offset);
184 tcg_gen_ld_tl(tn, cpu_env, offset);
186 static inline void _t_gen_mov_env_TN(int offset, TCGv tn)
188 if (offset > sizeof (CPUState))
189 fprintf(stderr, "wrong store to env at off=%d\n", offset);
190 tcg_gen_st_tl(tn, cpu_env, offset);
193 static inline void t_gen_mov_TN_preg(TCGv tn, int r)
196 fprintf(stderr, "wrong register read $p%d\n", r);
197 if (r == PR_BZ || r == PR_WZ || r == PR_DZ)
198 tcg_gen_mov_tl(tn, tcg_const_tl(0));
200 tcg_gen_mov_tl(tn, tcg_const_tl(32));
201 else if (r == PR_EDA) {
202 printf("read from EDA!\n");
203 tcg_gen_mov_tl(tn, cpu_PR[r]);
206 tcg_gen_mov_tl(tn, cpu_PR[r]);
208 static inline void t_gen_mov_preg_TN(DisasContext *dc, int r, TCGv tn)
211 fprintf(stderr, "wrong register write $p%d\n", r);
212 if (r == PR_BZ || r == PR_WZ || r == PR_DZ)
214 else if (r == PR_SRS)
215 tcg_gen_andi_tl(cpu_PR[r], tn, 3);
218 gen_helper_tlb_flush_pid(tn);
219 if (dc->tb_flags & S_FLAG && r == PR_SPC)
220 gen_helper_spc_write(tn);
221 else if (r == PR_CCS)
222 dc->cpustate_changed = 1;
223 tcg_gen_mov_tl(cpu_PR[r], tn);
227 static inline void t_gen_raise_exception(uint32_t index)
229 TCGv_i32 tmp = tcg_const_i32(index);
230 gen_helper_raise_exception(tmp);
231 tcg_temp_free_i32(tmp);
234 static void t_gen_lsl(TCGv d, TCGv a, TCGv b)
239 t_31 = tcg_const_tl(31);
240 tcg_gen_shl_tl(d, a, b);
242 tcg_gen_sub_tl(t0, t_31, b);
243 tcg_gen_sar_tl(t0, t0, t_31);
244 tcg_gen_and_tl(t0, t0, d);
245 tcg_gen_xor_tl(d, d, t0);
250 static void t_gen_lsr(TCGv d, TCGv a, TCGv b)
255 t_31 = tcg_temp_new();
256 tcg_gen_shr_tl(d, a, b);
258 tcg_gen_movi_tl(t_31, 31);
259 tcg_gen_sub_tl(t0, t_31, b);
260 tcg_gen_sar_tl(t0, t0, t_31);
261 tcg_gen_and_tl(t0, t0, d);
262 tcg_gen_xor_tl(d, d, t0);
267 static void t_gen_asr(TCGv d, TCGv a, TCGv b)
272 t_31 = tcg_temp_new();
273 tcg_gen_sar_tl(d, a, b);
275 tcg_gen_movi_tl(t_31, 31);
276 tcg_gen_sub_tl(t0, t_31, b);
277 tcg_gen_sar_tl(t0, t0, t_31);
278 tcg_gen_or_tl(d, d, t0);
283 /* 64-bit signed mul, lower result in d and upper in d2. */
284 static void t_gen_muls(TCGv d, TCGv d2, TCGv a, TCGv b)
288 t0 = tcg_temp_new_i64();
289 t1 = tcg_temp_new_i64();
291 tcg_gen_ext_i32_i64(t0, a);
292 tcg_gen_ext_i32_i64(t1, b);
293 tcg_gen_mul_i64(t0, t0, t1);
295 tcg_gen_trunc_i64_i32(d, t0);
296 tcg_gen_shri_i64(t0, t0, 32);
297 tcg_gen_trunc_i64_i32(d2, t0);
299 tcg_temp_free_i64(t0);
300 tcg_temp_free_i64(t1);
303 /* 64-bit unsigned muls, lower result in d and upper in d2. */
304 static void t_gen_mulu(TCGv d, TCGv d2, TCGv a, TCGv b)
308 t0 = tcg_temp_new_i64();
309 t1 = tcg_temp_new_i64();
311 tcg_gen_extu_i32_i64(t0, a);
312 tcg_gen_extu_i32_i64(t1, b);
313 tcg_gen_mul_i64(t0, t0, t1);
315 tcg_gen_trunc_i64_i32(d, t0);
316 tcg_gen_shri_i64(t0, t0, 32);
317 tcg_gen_trunc_i64_i32(d2, t0);
319 tcg_temp_free_i64(t0);
320 tcg_temp_free_i64(t1);
323 /* 32bit branch-free binary search for counting leading zeros. */
324 static void t_gen_lz_i32(TCGv d, TCGv x)
328 y = tcg_temp_new_i32();
329 m = tcg_temp_new_i32();
330 n = tcg_temp_new_i32();
333 tcg_gen_shri_i32(y, x, 16);
334 tcg_gen_neg_i32(y, y);
336 /* m = (y >> 16) & 16 */
337 tcg_gen_sari_i32(m, y, 16);
338 tcg_gen_andi_i32(m, m, 16);
341 tcg_gen_sub_i32(n, tcg_const_i32(16), m);
343 tcg_gen_shr_i32(x, x, m);
346 tcg_gen_subi_i32(y, x, 0x100);
347 /* m = (y >> 16) & 8 */
348 tcg_gen_sari_i32(m, y, 16);
349 tcg_gen_andi_i32(m, m, 8);
351 tcg_gen_add_i32(n, n, m);
353 tcg_gen_shl_i32(x, x, m);
356 tcg_gen_subi_i32(y, x, 0x1000);
357 /* m = (y >> 16) & 4 */
358 tcg_gen_sari_i32(m, y, 16);
359 tcg_gen_andi_i32(m, m, 4);
361 tcg_gen_add_i32(n, n, m);
363 tcg_gen_shl_i32(x, x, m);
366 tcg_gen_subi_i32(y, x, 0x4000);
367 /* m = (y >> 16) & 2 */
368 tcg_gen_sari_i32(m, y, 16);
369 tcg_gen_andi_i32(m, m, 2);
371 tcg_gen_add_i32(n, n, m);
373 tcg_gen_shl_i32(x, x, m);
376 tcg_gen_shri_i32(y, x, 14);
377 /* m = y & ~(y >> 1) */
378 tcg_gen_sari_i32(m, y, 1);
379 tcg_gen_not_i32(m, m);
380 tcg_gen_and_i32(m, m, y);
383 tcg_gen_addi_i32(d, n, 2);
384 tcg_gen_sub_i32(d, d, m);
391 static void t_gen_btst(TCGv d, TCGv a, TCGv b)
399 The N flag is set according to the selected bit in the dest reg.
400 The Z flag is set if the selected bit and all bits to the right are
402 The X flag is cleared.
403 Other flags are left untouched.
404 The destination reg is not affected.
406 unsigned int fz, sbit, bset, mask, masked_t0;
409 bset = !!(T0 & (1 << sbit));
410 mask = sbit == 31 ? -1 : (1 << (sbit + 1)) - 1;
411 masked_t0 = T0 & mask;
412 fz = !(masked_t0 | bset);
414 // Clear the X, N and Z flags.
415 T0 = env->pregs[PR_CCS] & ~(X_FLAG | N_FLAG | Z_FLAG);
416 // Set the N and Z flags accordingly.
417 T0 |= (bset << 3) | (fz << 2);
420 l1 = gen_new_label();
421 sbit = tcg_temp_new();
422 bset = tcg_temp_new();
425 /* Compute bset and sbit. */
426 tcg_gen_andi_tl(sbit, b, 31);
427 tcg_gen_shl_tl(t0, tcg_const_tl(1), sbit);
428 tcg_gen_and_tl(bset, a, t0);
429 tcg_gen_shr_tl(bset, bset, sbit);
430 /* Displace to N_FLAG. */
431 tcg_gen_shli_tl(bset, bset, 3);
433 tcg_gen_shl_tl(sbit, tcg_const_tl(2), sbit);
434 tcg_gen_subi_tl(sbit, sbit, 1);
435 tcg_gen_and_tl(sbit, a, sbit);
437 tcg_gen_andi_tl(d, cpu_PR[PR_CCS], ~(X_FLAG | N_FLAG | Z_FLAG));
438 /* or in the N_FLAG. */
439 tcg_gen_or_tl(d, d, bset);
440 tcg_gen_brcondi_tl(TCG_COND_NE, sbit, 0, l1);
441 /* or in the Z_FLAG. */
442 tcg_gen_ori_tl(d, d, Z_FLAG);
449 static void t_gen_cris_dstep(TCGv d, TCGv a, TCGv b)
453 l1 = gen_new_label();
460 tcg_gen_shli_tl(d, a, 1);
461 tcg_gen_brcond_tl(TCG_COND_LTU, d, b, l1);
462 tcg_gen_sub_tl(d, d, b);
466 /* Extended arithmetics on CRIS. */
467 static inline void t_gen_add_flag(TCGv d, int flag)
472 t_gen_mov_TN_preg(c, PR_CCS);
473 /* Propagate carry into d. */
474 tcg_gen_andi_tl(c, c, 1 << flag);
476 tcg_gen_shri_tl(c, c, flag);
477 tcg_gen_add_tl(d, d, c);
481 static inline void t_gen_addx_carry(DisasContext *dc, TCGv d)
483 if (dc->flagx_known) {
488 t_gen_mov_TN_preg(c, PR_CCS);
489 /* C flag is already at bit 0. */
490 tcg_gen_andi_tl(c, c, C_FLAG);
491 tcg_gen_add_tl(d, d, c);
499 t_gen_mov_TN_preg(x, PR_CCS);
500 tcg_gen_mov_tl(c, x);
502 /* Propagate carry into d if X is set. Branch free. */
503 tcg_gen_andi_tl(c, c, C_FLAG);
504 tcg_gen_andi_tl(x, x, X_FLAG);
505 tcg_gen_shri_tl(x, x, 4);
507 tcg_gen_and_tl(x, x, c);
508 tcg_gen_add_tl(d, d, x);
514 static inline void t_gen_subx_carry(DisasContext *dc, TCGv d)
516 if (dc->flagx_known) {
521 t_gen_mov_TN_preg(c, PR_CCS);
522 /* C flag is already at bit 0. */
523 tcg_gen_andi_tl(c, c, C_FLAG);
524 tcg_gen_sub_tl(d, d, c);
532 t_gen_mov_TN_preg(x, PR_CCS);
533 tcg_gen_mov_tl(c, x);
535 /* Propagate carry into d if X is set. Branch free. */
536 tcg_gen_andi_tl(c, c, C_FLAG);
537 tcg_gen_andi_tl(x, x, X_FLAG);
538 tcg_gen_shri_tl(x, x, 4);
540 tcg_gen_and_tl(x, x, c);
541 tcg_gen_sub_tl(d, d, x);
547 /* Swap the two bytes within each half word of the s operand.
548 T0 = ((T0 << 8) & 0xff00ff00) | ((T0 >> 8) & 0x00ff00ff) */
549 static inline void t_gen_swapb(TCGv d, TCGv s)
554 org_s = tcg_temp_new();
556 /* d and s may refer to the same object. */
557 tcg_gen_mov_tl(org_s, s);
558 tcg_gen_shli_tl(t, org_s, 8);
559 tcg_gen_andi_tl(d, t, 0xff00ff00);
560 tcg_gen_shri_tl(t, org_s, 8);
561 tcg_gen_andi_tl(t, t, 0x00ff00ff);
562 tcg_gen_or_tl(d, d, t);
564 tcg_temp_free(org_s);
567 /* Swap the halfwords of the s operand. */
568 static inline void t_gen_swapw(TCGv d, TCGv s)
571 /* d and s refer the same object. */
573 tcg_gen_mov_tl(t, s);
574 tcg_gen_shli_tl(d, t, 16);
575 tcg_gen_shri_tl(t, t, 16);
576 tcg_gen_or_tl(d, d, t);
580 /* Reverse the within each byte.
581 T0 = (((T0 << 7) & 0x80808080) |
582 ((T0 << 5) & 0x40404040) |
583 ((T0 << 3) & 0x20202020) |
584 ((T0 << 1) & 0x10101010) |
585 ((T0 >> 1) & 0x08080808) |
586 ((T0 >> 3) & 0x04040404) |
587 ((T0 >> 5) & 0x02020202) |
588 ((T0 >> 7) & 0x01010101));
590 static inline void t_gen_swapr(TCGv d, TCGv s)
593 int shift; /* LSL when positive, LSR when negative. */
608 /* d and s refer the same object. */
610 org_s = tcg_temp_new();
611 tcg_gen_mov_tl(org_s, s);
613 tcg_gen_shli_tl(t, org_s, bitrev[0].shift);
614 tcg_gen_andi_tl(d, t, bitrev[0].mask);
615 for (i = 1; i < ARRAY_SIZE(bitrev); i++) {
616 if (bitrev[i].shift >= 0) {
617 tcg_gen_shli_tl(t, org_s, bitrev[i].shift);
619 tcg_gen_shri_tl(t, org_s, -bitrev[i].shift);
621 tcg_gen_andi_tl(t, t, bitrev[i].mask);
622 tcg_gen_or_tl(d, d, t);
625 tcg_temp_free(org_s);
628 static void t_gen_cc_jmp(TCGv pc_true, TCGv pc_false)
633 l1 = gen_new_label();
634 btaken = tcg_temp_new();
636 /* Conditional jmp. */
637 tcg_gen_mov_tl(btaken, env_btaken);
638 tcg_gen_mov_tl(env_pc, pc_false);
639 tcg_gen_brcondi_tl(TCG_COND_EQ, btaken, 0, l1);
640 tcg_gen_mov_tl(env_pc, pc_true);
643 tcg_temp_free(btaken);
646 static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest)
648 TranslationBlock *tb;
650 if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) {
652 tcg_gen_movi_tl(env_pc, dest);
653 tcg_gen_exit_tb((long)tb + n);
655 tcg_gen_movi_tl(env_pc, dest);
660 /* Sign extend at translation time. */
661 static int sign_extend(unsigned int val, unsigned int width)
673 static inline void cris_clear_x_flag(DisasContext *dc)
675 if (dc->flagx_known && dc->flags_x)
676 dc->flags_uptodate = 0;
682 static void cris_flush_cc_state(DisasContext *dc)
684 if (dc->cc_size_uptodate != dc->cc_size) {
685 tcg_gen_movi_tl(cc_size, dc->cc_size);
686 dc->cc_size_uptodate = dc->cc_size;
688 tcg_gen_movi_tl(cc_op, dc->cc_op);
689 tcg_gen_movi_tl(cc_mask, dc->cc_mask);
692 static void cris_evaluate_flags(DisasContext *dc)
694 if (!dc->flags_uptodate) {
695 cris_flush_cc_state(dc);
700 gen_helper_evaluate_flags_mcp();
703 gen_helper_evaluate_flags_muls();
706 gen_helper_evaluate_flags_mulu();
718 gen_helper_evaluate_flags_move_4();
721 gen_helper_evaluate_flags_move_2();
724 gen_helper_evaluate_flags();
736 gen_helper_evaluate_flags_alu_4();
739 gen_helper_evaluate_flags();
745 if (dc->flagx_known) {
747 tcg_gen_ori_tl(cpu_PR[PR_CCS],
748 cpu_PR[PR_CCS], X_FLAG);
750 tcg_gen_andi_tl(cpu_PR[PR_CCS],
751 cpu_PR[PR_CCS], ~X_FLAG);
754 dc->flags_uptodate = 1;
758 static void cris_cc_mask(DisasContext *dc, unsigned int mask)
767 /* Check if we need to evaluate the condition codes due to
769 ovl = (dc->cc_mask ^ mask) & ~mask;
771 /* TODO: optimize this case. It trigs all the time. */
772 cris_evaluate_flags (dc);
778 static void cris_update_cc_op(DisasContext *dc, int op, int size)
782 dc->flags_uptodate = 0;
785 static inline void cris_update_cc_x(DisasContext *dc)
787 /* Save the x flag state at the time of the cc snapshot. */
788 if (dc->flagx_known) {
789 if (dc->cc_x_uptodate == (2 | dc->flags_x))
791 tcg_gen_movi_tl(cc_x, dc->flags_x);
792 dc->cc_x_uptodate = 2 | dc->flags_x;
795 tcg_gen_andi_tl(cc_x, cpu_PR[PR_CCS], X_FLAG);
796 dc->cc_x_uptodate = 1;
800 /* Update cc prior to executing ALU op. Needs source operands untouched. */
801 static void cris_pre_alu_update_cc(DisasContext *dc, int op,
802 TCGv dst, TCGv src, int size)
805 cris_update_cc_op(dc, op, size);
806 tcg_gen_mov_tl(cc_src, src);
815 tcg_gen_mov_tl(cc_dest, dst);
817 cris_update_cc_x(dc);
821 /* Update cc after executing ALU op. needs the result. */
822 static inline void cris_update_result(DisasContext *dc, TCGv res)
825 if (dc->cc_size == 4 &&
826 (dc->cc_op == CC_OP_SUB
827 || dc->cc_op == CC_OP_ADD))
829 tcg_gen_mov_tl(cc_result, res);
833 /* Returns one if the write back stage should execute. */
834 static void cris_alu_op_exec(DisasContext *dc, int op,
835 TCGv dst, TCGv a, TCGv b, int size)
837 /* Emit the ALU insns. */
841 tcg_gen_add_tl(dst, a, b);
842 /* Extended arithmetics. */
843 t_gen_addx_carry(dc, dst);
846 tcg_gen_add_tl(dst, a, b);
847 t_gen_add_flag(dst, 0); /* C_FLAG. */
850 tcg_gen_add_tl(dst, a, b);
851 t_gen_add_flag(dst, 8); /* R_FLAG. */
854 tcg_gen_sub_tl(dst, a, b);
855 /* Extended arithmetics. */
856 t_gen_subx_carry(dc, dst);
859 tcg_gen_mov_tl(dst, b);
862 tcg_gen_or_tl(dst, a, b);
865 tcg_gen_and_tl(dst, a, b);
868 tcg_gen_xor_tl(dst, a, b);
871 t_gen_lsl(dst, a, b);
874 t_gen_lsr(dst, a, b);
877 t_gen_asr(dst, a, b);
880 tcg_gen_neg_tl(dst, b);
881 /* Extended arithmetics. */
882 t_gen_subx_carry(dc, dst);
885 t_gen_lz_i32(dst, b);
888 t_gen_btst(dst, a, b);
891 t_gen_muls(dst, cpu_PR[PR_MOF], a, b);
894 t_gen_mulu(dst, cpu_PR[PR_MOF], a, b);
897 t_gen_cris_dstep(dst, a, b);
902 l1 = gen_new_label();
903 tcg_gen_mov_tl(dst, a);
904 tcg_gen_brcond_tl(TCG_COND_LEU, a, b, l1);
905 tcg_gen_mov_tl(dst, b);
910 tcg_gen_sub_tl(dst, a, b);
911 /* Extended arithmetics. */
912 t_gen_subx_carry(dc, dst);
915 fprintf (logfile, "illegal ALU op.\n");
921 tcg_gen_andi_tl(dst, dst, 0xff);
923 tcg_gen_andi_tl(dst, dst, 0xffff);
926 static void cris_alu(DisasContext *dc, int op,
927 TCGv d, TCGv op_a, TCGv op_b, int size)
934 if (op == CC_OP_BOUND || op == CC_OP_BTST)
935 tmp = tcg_temp_local_new();
937 if (op == CC_OP_CMP) {
938 tmp = tcg_temp_new();
940 } else if (size == 4) {
944 tmp = tcg_temp_new();
947 cris_pre_alu_update_cc(dc, op, op_a, op_b, size);
948 cris_alu_op_exec(dc, op, tmp, op_a, op_b, size);
949 cris_update_result(dc, tmp);
954 tcg_gen_andi_tl(d, d, ~0xff);
956 tcg_gen_andi_tl(d, d, ~0xffff);
957 tcg_gen_or_tl(d, d, tmp);
959 if (!TCGV_EQUAL(tmp, d))
963 static int arith_cc(DisasContext *dc)
967 case CC_OP_ADDC: return 1;
968 case CC_OP_ADD: return 1;
969 case CC_OP_SUB: return 1;
970 case CC_OP_DSTEP: return 1;
971 case CC_OP_LSL: return 1;
972 case CC_OP_LSR: return 1;
973 case CC_OP_ASR: return 1;
974 case CC_OP_CMP: return 1;
975 case CC_OP_NEG: return 1;
976 case CC_OP_OR: return 1;
977 case CC_OP_XOR: return 1;
978 case CC_OP_MULU: return 1;
979 case CC_OP_MULS: return 1;
987 static void gen_tst_cc (DisasContext *dc, TCGv cc, int cond)
989 int arith_opt, move_opt;
991 /* TODO: optimize more condition codes. */
994 * If the flags are live, we've gotta look into the bits of CCS.
995 * Otherwise, if we just did an arithmetic operation we try to
996 * evaluate the condition code faster.
998 * When this function is done, T0 should be non-zero if the condition
1001 arith_opt = arith_cc(dc) && !dc->flags_uptodate;
1002 move_opt = (dc->cc_op == CC_OP_MOVE) && dc->flags_uptodate;
1005 if (arith_opt || move_opt) {
1006 /* If cc_result is zero, T0 should be
1007 non-zero otherwise T0 should be zero. */
1009 l1 = gen_new_label();
1010 tcg_gen_movi_tl(cc, 0);
1011 tcg_gen_brcondi_tl(TCG_COND_NE, cc_result,
1013 tcg_gen_movi_tl(cc, 1);
1017 cris_evaluate_flags(dc);
1019 cpu_PR[PR_CCS], Z_FLAG);
1023 if (arith_opt || move_opt)
1024 tcg_gen_mov_tl(cc, cc_result);
1026 cris_evaluate_flags(dc);
1027 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
1029 tcg_gen_andi_tl(cc, cc, Z_FLAG);
1033 cris_evaluate_flags(dc);
1034 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], C_FLAG);
1037 cris_evaluate_flags(dc);
1038 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], C_FLAG);
1039 tcg_gen_andi_tl(cc, cc, C_FLAG);
1042 cris_evaluate_flags(dc);
1043 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], V_FLAG);
1046 cris_evaluate_flags(dc);
1047 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
1049 tcg_gen_andi_tl(cc, cc, V_FLAG);
1052 if (arith_opt || move_opt) {
1055 if (dc->cc_size == 1)
1057 else if (dc->cc_size == 2)
1060 tcg_gen_shri_tl(cc, cc_result, bits);
1061 tcg_gen_xori_tl(cc, cc, 1);
1063 cris_evaluate_flags(dc);
1064 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS],
1066 tcg_gen_andi_tl(cc, cc, N_FLAG);
1070 if (arith_opt || move_opt) {
1073 if (dc->cc_size == 1)
1075 else if (dc->cc_size == 2)
1078 tcg_gen_shri_tl(cc, cc_result, 31);
1081 cris_evaluate_flags(dc);
1082 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS],
1087 cris_evaluate_flags(dc);
1088 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS],
1092 cris_evaluate_flags(dc);
1096 tmp = tcg_temp_new();
1097 tcg_gen_xori_tl(tmp, cpu_PR[PR_CCS],
1099 /* Overlay the C flag on top of the Z. */
1100 tcg_gen_shli_tl(cc, tmp, 2);
1101 tcg_gen_and_tl(cc, tmp, cc);
1102 tcg_gen_andi_tl(cc, cc, Z_FLAG);
1108 cris_evaluate_flags(dc);
1109 /* Overlay the V flag on top of the N. */
1110 tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2);
1112 cpu_PR[PR_CCS], cc);
1113 tcg_gen_andi_tl(cc, cc, N_FLAG);
1114 tcg_gen_xori_tl(cc, cc, N_FLAG);
1117 cris_evaluate_flags(dc);
1118 /* Overlay the V flag on top of the N. */
1119 tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2);
1121 cpu_PR[PR_CCS], cc);
1122 tcg_gen_andi_tl(cc, cc, N_FLAG);
1125 cris_evaluate_flags(dc);
1132 /* To avoid a shift we overlay everything on
1134 tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2);
1135 tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1);
1137 tcg_gen_xori_tl(z, z, 2);
1139 tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]);
1140 tcg_gen_xori_tl(n, n, 2);
1141 tcg_gen_and_tl(cc, z, n);
1142 tcg_gen_andi_tl(cc, cc, 2);
1149 cris_evaluate_flags(dc);
1156 /* To avoid a shift we overlay everything on
1158 tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2);
1159 tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1);
1161 tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]);
1162 tcg_gen_or_tl(cc, z, n);
1163 tcg_gen_andi_tl(cc, cc, 2);
1170 cris_evaluate_flags(dc);
1171 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], P_FLAG);
1174 tcg_gen_movi_tl(cc, 1);
1182 static void cris_store_direct_jmp(DisasContext *dc)
1184 /* Store the direct jmp state into the cpu-state. */
1185 if (dc->jmp == JMP_DIRECT) {
1186 tcg_gen_movi_tl(env_btarget, dc->jmp_pc);
1187 tcg_gen_movi_tl(env_btaken, 1);
1191 static void cris_prepare_cc_branch (DisasContext *dc,
1192 int offset, int cond)
1194 /* This helps us re-schedule the micro-code to insns in delay-slots
1195 before the actual jump. */
1196 dc->delayed_branch = 2;
1197 dc->jmp_pc = dc->pc + offset;
1201 dc->jmp = JMP_INDIRECT;
1202 gen_tst_cc (dc, env_btaken, cond);
1203 tcg_gen_movi_tl(env_btarget, dc->jmp_pc);
1205 /* Allow chaining. */
1206 dc->jmp = JMP_DIRECT;
1211 /* jumps, when the dest is in a live reg for example. Direct should be set
1212 when the dest addr is constant to allow tb chaining. */
1213 static inline void cris_prepare_jmp (DisasContext *dc, unsigned int type)
1215 /* This helps us re-schedule the micro-code to insns in delay-slots
1216 before the actual jump. */
1217 dc->delayed_branch = 2;
1219 if (type == JMP_INDIRECT)
1220 tcg_gen_movi_tl(env_btaken, 1);
1223 static void gen_load64(DisasContext *dc, TCGv_i64 dst, TCGv addr)
1225 int mem_index = cpu_mmu_index(dc->env);
1227 /* If we get a fault on a delayslot we must keep the jmp state in
1228 the cpu-state to be able to re-execute the jmp. */
1229 if (dc->delayed_branch == 1)
1230 cris_store_direct_jmp(dc);
1232 tcg_gen_qemu_ld64(dst, addr, mem_index);
1235 static void gen_load(DisasContext *dc, TCGv dst, TCGv addr,
1236 unsigned int size, int sign)
1238 int mem_index = cpu_mmu_index(dc->env);
1240 /* If we get a fault on a delayslot we must keep the jmp state in
1241 the cpu-state to be able to re-execute the jmp. */
1242 if (dc->delayed_branch == 1)
1243 cris_store_direct_jmp(dc);
1247 tcg_gen_qemu_ld8s(dst, addr, mem_index);
1249 tcg_gen_qemu_ld8u(dst, addr, mem_index);
1251 else if (size == 2) {
1253 tcg_gen_qemu_ld16s(dst, addr, mem_index);
1255 tcg_gen_qemu_ld16u(dst, addr, mem_index);
1257 else if (size == 4) {
1258 tcg_gen_qemu_ld32u(dst, addr, mem_index);
1265 static void gen_store (DisasContext *dc, TCGv addr, TCGv val,
1268 int mem_index = cpu_mmu_index(dc->env);
1270 /* If we get a fault on a delayslot we must keep the jmp state in
1271 the cpu-state to be able to re-execute the jmp. */
1272 if (dc->delayed_branch == 1)
1273 cris_store_direct_jmp(dc);
1276 /* Conditional writes. We only support the kind were X and P are known
1277 at translation time. */
1278 if (dc->flagx_known && dc->flags_x && (dc->tb_flags & P_FLAG)) {
1280 cris_evaluate_flags(dc);
1281 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], C_FLAG);
1286 tcg_gen_qemu_st8(val, addr, mem_index);
1288 tcg_gen_qemu_st16(val, addr, mem_index);
1290 tcg_gen_qemu_st32(val, addr, mem_index);
1292 if (dc->flagx_known && dc->flags_x) {
1293 cris_evaluate_flags(dc);
1294 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~C_FLAG);
1298 static inline void t_gen_sext(TCGv d, TCGv s, int size)
1301 tcg_gen_ext8s_i32(d, s);
1303 tcg_gen_ext16s_i32(d, s);
1304 else if(!TCGV_EQUAL(d, s))
1305 tcg_gen_mov_tl(d, s);
1308 static inline void t_gen_zext(TCGv d, TCGv s, int size)
1311 tcg_gen_ext8u_i32(d, s);
1313 tcg_gen_ext16u_i32(d, s);
1314 else if (!TCGV_EQUAL(d, s))
1315 tcg_gen_mov_tl(d, s);
1319 static char memsize_char(int size)
1323 case 1: return 'b'; break;
1324 case 2: return 'w'; break;
1325 case 4: return 'd'; break;
1333 static inline unsigned int memsize_z(DisasContext *dc)
1335 return dc->zsize + 1;
1338 static inline unsigned int memsize_zz(DisasContext *dc)
1349 static inline void do_postinc (DisasContext *dc, int size)
1352 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], size);
1355 static inline void dec_prep_move_r(DisasContext *dc, int rs, int rd,
1356 int size, int s_ext, TCGv dst)
1359 t_gen_sext(dst, cpu_R[rs], size);
1361 t_gen_zext(dst, cpu_R[rs], size);
1364 /* Prepare T0 and T1 for a register alu operation.
1365 s_ext decides if the operand1 should be sign-extended or zero-extended when
1367 static void dec_prep_alu_r(DisasContext *dc, int rs, int rd,
1368 int size, int s_ext, TCGv dst, TCGv src)
1370 dec_prep_move_r(dc, rs, rd, size, s_ext, src);
1373 t_gen_sext(dst, cpu_R[rd], size);
1375 t_gen_zext(dst, cpu_R[rd], size);
1378 static int dec_prep_move_m(DisasContext *dc, int s_ext, int memsize,
1381 unsigned int rs, rd;
1388 is_imm = rs == 15 && dc->postinc;
1390 /* Load [$rs] onto T1. */
1392 insn_len = 2 + memsize;
1399 imm = ldsb_code(dc->pc + 2);
1401 imm = ldsw_code(dc->pc + 2);
1404 imm = ldub_code(dc->pc + 2);
1406 imm = lduw_code(dc->pc + 2);
1409 imm = ldl_code(dc->pc + 2);
1411 tcg_gen_movi_tl(dst, imm);
1414 cris_flush_cc_state(dc);
1415 gen_load(dc, dst, cpu_R[rs], memsize, 0);
1417 t_gen_sext(dst, dst, memsize);
1419 t_gen_zext(dst, dst, memsize);
1424 /* Prepare T0 and T1 for a memory + alu operation.
1425 s_ext decides if the operand1 should be sign-extended or zero-extended when
1427 static int dec_prep_alu_m(DisasContext *dc, int s_ext, int memsize,
1432 insn_len = dec_prep_move_m(dc, s_ext, memsize, src);
1433 tcg_gen_mov_tl(dst, cpu_R[dc->op2]);
1438 static const char *cc_name(int cc)
1440 static const char *cc_names[16] = {
1441 "cc", "cs", "ne", "eq", "vc", "vs", "pl", "mi",
1442 "ls", "hi", "ge", "lt", "gt", "le", "a", "p"
1445 return cc_names[cc];
1449 /* Start of insn decoders. */
1451 static unsigned int dec_bccq(DisasContext *dc)
1455 uint32_t cond = dc->op2;
1458 offset = EXTRACT_FIELD (dc->ir, 1, 7);
1459 sign = EXTRACT_FIELD(dc->ir, 0, 0);
1462 offset |= sign << 8;
1464 offset = sign_extend(offset, 8);
1466 DIS(fprintf (logfile, "b%s %x\n", cc_name(cond), dc->pc + offset));
1468 /* op2 holds the condition-code. */
1469 cris_cc_mask(dc, 0);
1470 cris_prepare_cc_branch (dc, offset, cond);
1473 static unsigned int dec_addoq(DisasContext *dc)
1477 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 7);
1478 imm = sign_extend(dc->op1, 7);
1480 DIS(fprintf (logfile, "addoq %d, $r%u\n", imm, dc->op2));
1481 cris_cc_mask(dc, 0);
1482 /* Fetch register operand, */
1483 tcg_gen_addi_tl(cpu_R[R_ACR], cpu_R[dc->op2], imm);
1487 static unsigned int dec_addq(DisasContext *dc)
1489 DIS(fprintf (logfile, "addq %u, $r%u\n", dc->op1, dc->op2));
1491 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1493 cris_cc_mask(dc, CC_MASK_NZVC);
1495 cris_alu(dc, CC_OP_ADD,
1496 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
1499 static unsigned int dec_moveq(DisasContext *dc)
1503 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1504 imm = sign_extend(dc->op1, 5);
1505 DIS(fprintf (logfile, "moveq %d, $r%u\n", imm, dc->op2));
1507 tcg_gen_mov_tl(cpu_R[dc->op2], tcg_const_tl(imm));
1510 static unsigned int dec_subq(DisasContext *dc)
1512 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1514 DIS(fprintf (logfile, "subq %u, $r%u\n", dc->op1, dc->op2));
1516 cris_cc_mask(dc, CC_MASK_NZVC);
1517 cris_alu(dc, CC_OP_SUB,
1518 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
1521 static unsigned int dec_cmpq(DisasContext *dc)
1524 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1525 imm = sign_extend(dc->op1, 5);
1527 DIS(fprintf (logfile, "cmpq %d, $r%d\n", imm, dc->op2));
1528 cris_cc_mask(dc, CC_MASK_NZVC);
1530 cris_alu(dc, CC_OP_CMP,
1531 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
1534 static unsigned int dec_andq(DisasContext *dc)
1537 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1538 imm = sign_extend(dc->op1, 5);
1540 DIS(fprintf (logfile, "andq %d, $r%d\n", imm, dc->op2));
1541 cris_cc_mask(dc, CC_MASK_NZ);
1543 cris_alu(dc, CC_OP_AND,
1544 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
1547 static unsigned int dec_orq(DisasContext *dc)
1550 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5);
1551 imm = sign_extend(dc->op1, 5);
1552 DIS(fprintf (logfile, "orq %d, $r%d\n", imm, dc->op2));
1553 cris_cc_mask(dc, CC_MASK_NZ);
1555 cris_alu(dc, CC_OP_OR,
1556 cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4);
1559 static unsigned int dec_btstq(DisasContext *dc)
1562 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1563 DIS(fprintf (logfile, "btstq %u, $r%d\n", dc->op1, dc->op2));
1565 cris_cc_mask(dc, CC_MASK_NZ);
1566 l0 = tcg_temp_local_new();
1567 cris_alu(dc, CC_OP_BTST,
1568 l0, cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
1569 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
1570 t_gen_mov_preg_TN(dc, PR_CCS, l0);
1571 dc->flags_uptodate = 1;
1575 static unsigned int dec_asrq(DisasContext *dc)
1577 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1578 DIS(fprintf (logfile, "asrq %u, $r%d\n", dc->op1, dc->op2));
1579 cris_cc_mask(dc, CC_MASK_NZ);
1581 tcg_gen_sari_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1);
1582 cris_alu(dc, CC_OP_MOVE,
1584 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1587 static unsigned int dec_lslq(DisasContext *dc)
1589 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1590 DIS(fprintf (logfile, "lslq %u, $r%d\n", dc->op1, dc->op2));
1592 cris_cc_mask(dc, CC_MASK_NZ);
1594 tcg_gen_shli_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1);
1596 cris_alu(dc, CC_OP_MOVE,
1598 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1601 static unsigned int dec_lsrq(DisasContext *dc)
1603 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4);
1604 DIS(fprintf (logfile, "lsrq %u, $r%d\n", dc->op1, dc->op2));
1606 cris_cc_mask(dc, CC_MASK_NZ);
1608 tcg_gen_shri_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1);
1609 cris_alu(dc, CC_OP_MOVE,
1611 cpu_R[dc->op2], cpu_R[dc->op2], 4);
1615 static unsigned int dec_move_r(DisasContext *dc)
1617 int size = memsize_zz(dc);
1619 DIS(fprintf (logfile, "move.%c $r%u, $r%u\n",
1620 memsize_char(size), dc->op1, dc->op2));
1622 cris_cc_mask(dc, CC_MASK_NZ);
1624 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, cpu_R[dc->op2]);
1625 cris_cc_mask(dc, CC_MASK_NZ);
1626 cris_update_cc_op(dc, CC_OP_MOVE, 4);
1627 cris_update_cc_x(dc);
1628 cris_update_result(dc, cpu_R[dc->op2]);
1633 t0 = tcg_temp_new();
1634 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0);
1635 cris_alu(dc, CC_OP_MOVE,
1637 cpu_R[dc->op2], t0, size);
1643 static unsigned int dec_scc_r(DisasContext *dc)
1647 DIS(fprintf (logfile, "s%s $r%u\n",
1648 cc_name(cond), dc->op1));
1654 gen_tst_cc (dc, cpu_R[dc->op1], cond);
1655 l1 = gen_new_label();
1656 tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_R[dc->op1], 0, l1);
1657 tcg_gen_movi_tl(cpu_R[dc->op1], 1);
1661 tcg_gen_movi_tl(cpu_R[dc->op1], 1);
1663 cris_cc_mask(dc, 0);
1667 static inline void cris_alu_alloc_temps(DisasContext *dc, int size, TCGv *t)
1670 t[0] = cpu_R[dc->op2];
1671 t[1] = cpu_R[dc->op1];
1673 t[0] = tcg_temp_new();
1674 t[1] = tcg_temp_new();
1678 static inline void cris_alu_free_temps(DisasContext *dc, int size, TCGv *t)
1681 tcg_temp_free(t[0]);
1682 tcg_temp_free(t[1]);
1686 static unsigned int dec_and_r(DisasContext *dc)
1689 int size = memsize_zz(dc);
1691 DIS(fprintf (logfile, "and.%c $r%u, $r%u\n",
1692 memsize_char(size), dc->op1, dc->op2));
1694 cris_cc_mask(dc, CC_MASK_NZ);
1696 cris_alu_alloc_temps(dc, size, t);
1697 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1698 cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], size);
1699 cris_alu_free_temps(dc, size, t);
1703 static unsigned int dec_lz_r(DisasContext *dc)
1706 DIS(fprintf (logfile, "lz $r%u, $r%u\n",
1708 cris_cc_mask(dc, CC_MASK_NZ);
1709 t0 = tcg_temp_new();
1710 dec_prep_alu_r(dc, dc->op1, dc->op2, 4, 0, cpu_R[dc->op2], t0);
1711 cris_alu(dc, CC_OP_LZ, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
1716 static unsigned int dec_lsl_r(DisasContext *dc)
1719 int size = memsize_zz(dc);
1721 DIS(fprintf (logfile, "lsl.%c $r%u, $r%u\n",
1722 memsize_char(size), dc->op1, dc->op2));
1724 cris_cc_mask(dc, CC_MASK_NZ);
1725 cris_alu_alloc_temps(dc, size, t);
1726 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1727 tcg_gen_andi_tl(t[1], t[1], 63);
1728 cris_alu(dc, CC_OP_LSL, cpu_R[dc->op2], t[0], t[1], size);
1729 cris_alu_alloc_temps(dc, size, t);
1733 static unsigned int dec_lsr_r(DisasContext *dc)
1736 int size = memsize_zz(dc);
1738 DIS(fprintf (logfile, "lsr.%c $r%u, $r%u\n",
1739 memsize_char(size), dc->op1, dc->op2));
1741 cris_cc_mask(dc, CC_MASK_NZ);
1742 cris_alu_alloc_temps(dc, size, t);
1743 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1744 tcg_gen_andi_tl(t[1], t[1], 63);
1745 cris_alu(dc, CC_OP_LSR, cpu_R[dc->op2], t[0], t[1], size);
1746 cris_alu_free_temps(dc, size, t);
1750 static unsigned int dec_asr_r(DisasContext *dc)
1753 int size = memsize_zz(dc);
1755 DIS(fprintf (logfile, "asr.%c $r%u, $r%u\n",
1756 memsize_char(size), dc->op1, dc->op2));
1758 cris_cc_mask(dc, CC_MASK_NZ);
1759 cris_alu_alloc_temps(dc, size, t);
1760 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]);
1761 tcg_gen_andi_tl(t[1], t[1], 63);
1762 cris_alu(dc, CC_OP_ASR, cpu_R[dc->op2], t[0], t[1], size);
1763 cris_alu_free_temps(dc, size, t);
1767 static unsigned int dec_muls_r(DisasContext *dc)
1770 int size = memsize_zz(dc);
1772 DIS(fprintf (logfile, "muls.%c $r%u, $r%u\n",
1773 memsize_char(size), dc->op1, dc->op2));
1774 cris_cc_mask(dc, CC_MASK_NZV);
1775 cris_alu_alloc_temps(dc, size, t);
1776 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]);
1778 cris_alu(dc, CC_OP_MULS, cpu_R[dc->op2], t[0], t[1], 4);
1779 cris_alu_free_temps(dc, size, t);
1783 static unsigned int dec_mulu_r(DisasContext *dc)
1786 int size = memsize_zz(dc);
1788 DIS(fprintf (logfile, "mulu.%c $r%u, $r%u\n",
1789 memsize_char(size), dc->op1, dc->op2));
1790 cris_cc_mask(dc, CC_MASK_NZV);
1791 cris_alu_alloc_temps(dc, size, t);
1792 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1794 cris_alu(dc, CC_OP_MULU, cpu_R[dc->op2], t[0], t[1], 4);
1795 cris_alu_alloc_temps(dc, size, t);
1800 static unsigned int dec_dstep_r(DisasContext *dc)
1802 DIS(fprintf (logfile, "dstep $r%u, $r%u\n", dc->op1, dc->op2));
1803 cris_cc_mask(dc, CC_MASK_NZ);
1804 cris_alu(dc, CC_OP_DSTEP,
1805 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4);
1809 static unsigned int dec_xor_r(DisasContext *dc)
1812 int size = memsize_zz(dc);
1813 DIS(fprintf (logfile, "xor.%c $r%u, $r%u\n",
1814 memsize_char(size), dc->op1, dc->op2));
1815 BUG_ON(size != 4); /* xor is dword. */
1816 cris_cc_mask(dc, CC_MASK_NZ);
1817 cris_alu_alloc_temps(dc, size, t);
1818 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1820 cris_alu(dc, CC_OP_XOR, cpu_R[dc->op2], t[0], t[1], 4);
1821 cris_alu_free_temps(dc, size, t);
1825 static unsigned int dec_bound_r(DisasContext *dc)
1828 int size = memsize_zz(dc);
1829 DIS(fprintf (logfile, "bound.%c $r%u, $r%u\n",
1830 memsize_char(size), dc->op1, dc->op2));
1831 cris_cc_mask(dc, CC_MASK_NZ);
1832 l0 = tcg_temp_local_new();
1833 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, l0);
1834 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], cpu_R[dc->op2], l0, 4);
1839 static unsigned int dec_cmp_r(DisasContext *dc)
1842 int size = memsize_zz(dc);
1843 DIS(fprintf (logfile, "cmp.%c $r%u, $r%u\n",
1844 memsize_char(size), dc->op1, dc->op2));
1845 cris_cc_mask(dc, CC_MASK_NZVC);
1846 cris_alu_alloc_temps(dc, size, t);
1847 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1849 cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], t[0], t[1], size);
1850 cris_alu_free_temps(dc, size, t);
1854 static unsigned int dec_abs_r(DisasContext *dc)
1858 DIS(fprintf (logfile, "abs $r%u, $r%u\n",
1860 cris_cc_mask(dc, CC_MASK_NZ);
1862 t0 = tcg_temp_new();
1863 tcg_gen_sari_tl(t0, cpu_R[dc->op1], 31);
1864 tcg_gen_xor_tl(cpu_R[dc->op2], cpu_R[dc->op1], t0);
1865 tcg_gen_sub_tl(cpu_R[dc->op2], cpu_R[dc->op2], t0);
1868 cris_alu(dc, CC_OP_MOVE,
1869 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op2], 4);
1873 static unsigned int dec_add_r(DisasContext *dc)
1876 int size = memsize_zz(dc);
1877 DIS(fprintf (logfile, "add.%c $r%u, $r%u\n",
1878 memsize_char(size), dc->op1, dc->op2));
1879 cris_cc_mask(dc, CC_MASK_NZVC);
1880 cris_alu_alloc_temps(dc, size, t);
1881 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1883 cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], t[0], t[1], size);
1884 cris_alu_free_temps(dc, size, t);
1888 static unsigned int dec_addc_r(DisasContext *dc)
1890 DIS(fprintf (logfile, "addc $r%u, $r%u\n",
1892 cris_evaluate_flags(dc);
1893 cris_cc_mask(dc, CC_MASK_NZVC);
1894 cris_alu(dc, CC_OP_ADDC,
1895 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4);
1899 static unsigned int dec_mcp_r(DisasContext *dc)
1901 DIS(fprintf (logfile, "mcp $p%u, $r%u\n",
1903 cris_evaluate_flags(dc);
1904 cris_cc_mask(dc, CC_MASK_RNZV);
1905 cris_alu(dc, CC_OP_MCP,
1906 cpu_R[dc->op1], cpu_R[dc->op1], cpu_PR[dc->op2], 4);
1911 static char * swapmode_name(int mode, char *modename) {
1914 modename[i++] = 'n';
1916 modename[i++] = 'w';
1918 modename[i++] = 'b';
1920 modename[i++] = 'r';
1926 static unsigned int dec_swap_r(DisasContext *dc)
1932 DIS(fprintf (logfile, "swap%s $r%u\n",
1933 swapmode_name(dc->op2, modename), dc->op1));
1935 cris_cc_mask(dc, CC_MASK_NZ);
1936 t0 = tcg_temp_new();
1937 t_gen_mov_TN_reg(t0, dc->op1);
1939 tcg_gen_not_tl(t0, t0);
1941 t_gen_swapw(t0, t0);
1943 t_gen_swapb(t0, t0);
1945 t_gen_swapr(t0, t0);
1946 cris_alu(dc, CC_OP_MOVE,
1947 cpu_R[dc->op1], cpu_R[dc->op1], t0, 4);
1952 static unsigned int dec_or_r(DisasContext *dc)
1955 int size = memsize_zz(dc);
1956 DIS(fprintf (logfile, "or.%c $r%u, $r%u\n",
1957 memsize_char(size), dc->op1, dc->op2));
1958 cris_cc_mask(dc, CC_MASK_NZ);
1959 cris_alu_alloc_temps(dc, size, t);
1960 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
1961 cris_alu(dc, CC_OP_OR, cpu_R[dc->op2], t[0], t[1], size);
1962 cris_alu_free_temps(dc, size, t);
1966 static unsigned int dec_addi_r(DisasContext *dc)
1969 DIS(fprintf (logfile, "addi.%c $r%u, $r%u\n",
1970 memsize_char(memsize_zz(dc)), dc->op2, dc->op1));
1971 cris_cc_mask(dc, 0);
1972 t0 = tcg_temp_new();
1973 tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize));
1974 tcg_gen_add_tl(cpu_R[dc->op1], cpu_R[dc->op1], t0);
1979 static unsigned int dec_addi_acr(DisasContext *dc)
1982 DIS(fprintf (logfile, "addi.%c $r%u, $r%u, $acr\n",
1983 memsize_char(memsize_zz(dc)), dc->op2, dc->op1));
1984 cris_cc_mask(dc, 0);
1985 t0 = tcg_temp_new();
1986 tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize));
1987 tcg_gen_add_tl(cpu_R[R_ACR], cpu_R[dc->op1], t0);
1992 static unsigned int dec_neg_r(DisasContext *dc)
1995 int size = memsize_zz(dc);
1996 DIS(fprintf (logfile, "neg.%c $r%u, $r%u\n",
1997 memsize_char(size), dc->op1, dc->op2));
1998 cris_cc_mask(dc, CC_MASK_NZVC);
1999 cris_alu_alloc_temps(dc, size, t);
2000 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
2002 cris_alu(dc, CC_OP_NEG, cpu_R[dc->op2], t[0], t[1], size);
2003 cris_alu_free_temps(dc, size, t);
2007 static unsigned int dec_btst_r(DisasContext *dc)
2010 DIS(fprintf (logfile, "btst $r%u, $r%u\n",
2012 cris_cc_mask(dc, CC_MASK_NZ);
2014 l0 = tcg_temp_local_new();
2015 cris_alu(dc, CC_OP_BTST, l0, cpu_R[dc->op2], cpu_R[dc->op1], 4);
2016 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
2017 t_gen_mov_preg_TN(dc, PR_CCS, l0);
2018 dc->flags_uptodate = 1;
2023 static unsigned int dec_sub_r(DisasContext *dc)
2026 int size = memsize_zz(dc);
2027 DIS(fprintf (logfile, "sub.%c $r%u, $r%u\n",
2028 memsize_char(size), dc->op1, dc->op2));
2029 cris_cc_mask(dc, CC_MASK_NZVC);
2030 cris_alu_alloc_temps(dc, size, t);
2031 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]);
2032 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], size);
2033 cris_alu_free_temps(dc, size, t);
2037 /* Zero extension. From size to dword. */
2038 static unsigned int dec_movu_r(DisasContext *dc)
2041 int size = memsize_z(dc);
2042 DIS(fprintf (logfile, "movu.%c $r%u, $r%u\n",
2046 cris_cc_mask(dc, CC_MASK_NZ);
2047 t0 = tcg_temp_new();
2048 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0);
2049 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
2054 /* Sign extension. From size to dword. */
2055 static unsigned int dec_movs_r(DisasContext *dc)
2058 int size = memsize_z(dc);
2059 DIS(fprintf (logfile, "movs.%c $r%u, $r%u\n",
2063 cris_cc_mask(dc, CC_MASK_NZ);
2064 t0 = tcg_temp_new();
2065 /* Size can only be qi or hi. */
2066 t_gen_sext(t0, cpu_R[dc->op1], size);
2067 cris_alu(dc, CC_OP_MOVE,
2068 cpu_R[dc->op2], cpu_R[dc->op1], t0, 4);
2073 /* zero extension. From size to dword. */
2074 static unsigned int dec_addu_r(DisasContext *dc)
2077 int size = memsize_z(dc);
2078 DIS(fprintf (logfile, "addu.%c $r%u, $r%u\n",
2082 cris_cc_mask(dc, CC_MASK_NZVC);
2083 t0 = tcg_temp_new();
2084 /* Size can only be qi or hi. */
2085 t_gen_zext(t0, cpu_R[dc->op1], size);
2086 cris_alu(dc, CC_OP_ADD,
2087 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
2092 /* Sign extension. From size to dword. */
2093 static unsigned int dec_adds_r(DisasContext *dc)
2096 int size = memsize_z(dc);
2097 DIS(fprintf (logfile, "adds.%c $r%u, $r%u\n",
2101 cris_cc_mask(dc, CC_MASK_NZVC);
2102 t0 = tcg_temp_new();
2103 /* Size can only be qi or hi. */
2104 t_gen_sext(t0, cpu_R[dc->op1], size);
2105 cris_alu(dc, CC_OP_ADD,
2106 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
2111 /* Zero extension. From size to dword. */
2112 static unsigned int dec_subu_r(DisasContext *dc)
2115 int size = memsize_z(dc);
2116 DIS(fprintf (logfile, "subu.%c $r%u, $r%u\n",
2120 cris_cc_mask(dc, CC_MASK_NZVC);
2121 t0 = tcg_temp_new();
2122 /* Size can only be qi or hi. */
2123 t_gen_zext(t0, cpu_R[dc->op1], size);
2124 cris_alu(dc, CC_OP_SUB,
2125 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
2130 /* Sign extension. From size to dword. */
2131 static unsigned int dec_subs_r(DisasContext *dc)
2134 int size = memsize_z(dc);
2135 DIS(fprintf (logfile, "subs.%c $r%u, $r%u\n",
2139 cris_cc_mask(dc, CC_MASK_NZVC);
2140 t0 = tcg_temp_new();
2141 /* Size can only be qi or hi. */
2142 t_gen_sext(t0, cpu_R[dc->op1], size);
2143 cris_alu(dc, CC_OP_SUB,
2144 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4);
2149 static unsigned int dec_setclrf(DisasContext *dc)
2152 int set = (~dc->opcode >> 2) & 1;
2155 flags = (EXTRACT_FIELD(dc->ir, 12, 15) << 4)
2156 | EXTRACT_FIELD(dc->ir, 0, 3);
2157 if (set && flags == 0) {
2158 DIS(fprintf (logfile, "nop\n"));
2160 } else if (!set && (flags & 0x20)) {
2161 DIS(fprintf (logfile, "di\n"));
2164 DIS(fprintf (logfile, "%sf %x\n",
2165 set ? "set" : "clr",
2169 /* User space is not allowed to touch these. Silently ignore. */
2170 if (dc->tb_flags & U_FLAG) {
2171 flags &= ~(S_FLAG | I_FLAG | U_FLAG);
2174 if (flags & X_FLAG) {
2175 dc->flagx_known = 1;
2177 dc->flags_x = X_FLAG;
2182 /* Break the TB if the P flag changes. */
2183 if (flags & P_FLAG) {
2184 if ((set && !(dc->tb_flags & P_FLAG))
2185 || (!set && (dc->tb_flags & P_FLAG))) {
2186 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2187 dc->is_jmp = DISAS_UPDATE;
2188 dc->cpustate_changed = 1;
2191 if (flags & S_FLAG) {
2192 dc->cpustate_changed = 1;
2196 /* Simply decode the flags. */
2197 cris_evaluate_flags (dc);
2198 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
2199 cris_update_cc_x(dc);
2200 tcg_gen_movi_tl(cc_op, dc->cc_op);
2203 if (!(dc->tb_flags & U_FLAG) && (flags & U_FLAG)) {
2204 /* Enter user mode. */
2205 t_gen_mov_env_TN(ksp, cpu_R[R_SP]);
2206 tcg_gen_mov_tl(cpu_R[R_SP], cpu_PR[PR_USP]);
2207 dc->cpustate_changed = 1;
2209 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags);
2212 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~flags);
2214 dc->flags_uptodate = 1;
2219 static unsigned int dec_move_rs(DisasContext *dc)
2221 DIS(fprintf (logfile, "move $r%u, $s%u\n", dc->op1, dc->op2));
2222 cris_cc_mask(dc, 0);
2223 gen_helper_movl_sreg_reg(tcg_const_tl(dc->op2), tcg_const_tl(dc->op1));
2226 static unsigned int dec_move_sr(DisasContext *dc)
2228 DIS(fprintf (logfile, "move $s%u, $r%u\n", dc->op2, dc->op1));
2229 cris_cc_mask(dc, 0);
2230 gen_helper_movl_reg_sreg(tcg_const_tl(dc->op1), tcg_const_tl(dc->op2));
2234 static unsigned int dec_move_rp(DisasContext *dc)
2237 DIS(fprintf (logfile, "move $r%u, $p%u\n", dc->op1, dc->op2));
2238 cris_cc_mask(dc, 0);
2240 t[0] = tcg_temp_new();
2241 if (dc->op2 == PR_CCS) {
2242 cris_evaluate_flags(dc);
2243 t_gen_mov_TN_reg(t[0], dc->op1);
2244 if (dc->tb_flags & U_FLAG) {
2245 t[1] = tcg_temp_new();
2246 /* User space is not allowed to touch all flags. */
2247 tcg_gen_andi_tl(t[0], t[0], 0x39f);
2248 tcg_gen_andi_tl(t[1], cpu_PR[PR_CCS], ~0x39f);
2249 tcg_gen_or_tl(t[0], t[1], t[0]);
2250 tcg_temp_free(t[1]);
2254 t_gen_mov_TN_reg(t[0], dc->op1);
2256 t_gen_mov_preg_TN(dc, dc->op2, t[0]);
2257 if (dc->op2 == PR_CCS) {
2258 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
2259 dc->flags_uptodate = 1;
2261 tcg_temp_free(t[0]);
2264 static unsigned int dec_move_pr(DisasContext *dc)
2267 DIS(fprintf (logfile, "move $p%u, $r%u\n", dc->op1, dc->op2));
2268 cris_cc_mask(dc, 0);
2270 if (dc->op2 == PR_CCS)
2271 cris_evaluate_flags(dc);
2273 t0 = tcg_temp_new();
2274 t_gen_mov_TN_preg(t0, dc->op2);
2275 cris_alu(dc, CC_OP_MOVE,
2276 cpu_R[dc->op1], cpu_R[dc->op1], t0, preg_sizes[dc->op2]);
2281 static unsigned int dec_move_mr(DisasContext *dc)
2283 int memsize = memsize_zz(dc);
2285 DIS(fprintf (logfile, "move.%c [$r%u%s, $r%u\n",
2286 memsize_char(memsize),
2287 dc->op1, dc->postinc ? "+]" : "]",
2291 insn_len = dec_prep_move_m(dc, 0, 4, cpu_R[dc->op2]);
2292 cris_cc_mask(dc, CC_MASK_NZ);
2293 cris_update_cc_op(dc, CC_OP_MOVE, 4);
2294 cris_update_cc_x(dc);
2295 cris_update_result(dc, cpu_R[dc->op2]);
2300 t0 = tcg_temp_new();
2301 insn_len = dec_prep_move_m(dc, 0, memsize, t0);
2302 cris_cc_mask(dc, CC_MASK_NZ);
2303 cris_alu(dc, CC_OP_MOVE,
2304 cpu_R[dc->op2], cpu_R[dc->op2], t0, memsize);
2307 do_postinc(dc, memsize);
2311 static inline void cris_alu_m_alloc_temps(TCGv *t)
2313 t[0] = tcg_temp_new();
2314 t[1] = tcg_temp_new();
2317 static inline void cris_alu_m_free_temps(TCGv *t)
2319 tcg_temp_free(t[0]);
2320 tcg_temp_free(t[1]);
2323 static unsigned int dec_movs_m(DisasContext *dc)
2326 int memsize = memsize_z(dc);
2328 DIS(fprintf (logfile, "movs.%c [$r%u%s, $r%u\n",
2329 memsize_char(memsize),
2330 dc->op1, dc->postinc ? "+]" : "]",
2333 cris_alu_m_alloc_temps(t);
2335 insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]);
2336 cris_cc_mask(dc, CC_MASK_NZ);
2337 cris_alu(dc, CC_OP_MOVE,
2338 cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2339 do_postinc(dc, memsize);
2340 cris_alu_m_free_temps(t);
2344 static unsigned int dec_addu_m(DisasContext *dc)
2347 int memsize = memsize_z(dc);
2349 DIS(fprintf (logfile, "addu.%c [$r%u%s, $r%u\n",
2350 memsize_char(memsize),
2351 dc->op1, dc->postinc ? "+]" : "]",
2354 cris_alu_m_alloc_temps(t);
2356 insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
2357 cris_cc_mask(dc, CC_MASK_NZVC);
2358 cris_alu(dc, CC_OP_ADD,
2359 cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2360 do_postinc(dc, memsize);
2361 cris_alu_m_free_temps(t);
2365 static unsigned int dec_adds_m(DisasContext *dc)
2368 int memsize = memsize_z(dc);
2370 DIS(fprintf (logfile, "adds.%c [$r%u%s, $r%u\n",
2371 memsize_char(memsize),
2372 dc->op1, dc->postinc ? "+]" : "]",
2375 cris_alu_m_alloc_temps(t);
2377 insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]);
2378 cris_cc_mask(dc, CC_MASK_NZVC);
2379 cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2380 do_postinc(dc, memsize);
2381 cris_alu_m_free_temps(t);
2385 static unsigned int dec_subu_m(DisasContext *dc)
2388 int memsize = memsize_z(dc);
2390 DIS(fprintf (logfile, "subu.%c [$r%u%s, $r%u\n",
2391 memsize_char(memsize),
2392 dc->op1, dc->postinc ? "+]" : "]",
2395 cris_alu_m_alloc_temps(t);
2397 insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
2398 cris_cc_mask(dc, CC_MASK_NZVC);
2399 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2400 do_postinc(dc, memsize);
2401 cris_alu_m_free_temps(t);
2405 static unsigned int dec_subs_m(DisasContext *dc)
2408 int memsize = memsize_z(dc);
2410 DIS(fprintf (logfile, "subs.%c [$r%u%s, $r%u\n",
2411 memsize_char(memsize),
2412 dc->op1, dc->postinc ? "+]" : "]",
2415 cris_alu_m_alloc_temps(t);
2417 insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]);
2418 cris_cc_mask(dc, CC_MASK_NZVC);
2419 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2420 do_postinc(dc, memsize);
2421 cris_alu_m_free_temps(t);
2425 static unsigned int dec_movu_m(DisasContext *dc)
2428 int memsize = memsize_z(dc);
2431 DIS(fprintf (logfile, "movu.%c [$r%u%s, $r%u\n",
2432 memsize_char(memsize),
2433 dc->op1, dc->postinc ? "+]" : "]",
2436 cris_alu_m_alloc_temps(t);
2437 insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
2438 cris_cc_mask(dc, CC_MASK_NZ);
2439 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2440 do_postinc(dc, memsize);
2441 cris_alu_m_free_temps(t);
2445 static unsigned int dec_cmpu_m(DisasContext *dc)
2448 int memsize = memsize_z(dc);
2450 DIS(fprintf (logfile, "cmpu.%c [$r%u%s, $r%u\n",
2451 memsize_char(memsize),
2452 dc->op1, dc->postinc ? "+]" : "]",
2455 cris_alu_m_alloc_temps(t);
2456 insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
2457 cris_cc_mask(dc, CC_MASK_NZVC);
2458 cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4);
2459 do_postinc(dc, memsize);
2460 cris_alu_m_free_temps(t);
2464 static unsigned int dec_cmps_m(DisasContext *dc)
2467 int memsize = memsize_z(dc);
2469 DIS(fprintf (logfile, "cmps.%c [$r%u%s, $r%u\n",
2470 memsize_char(memsize),
2471 dc->op1, dc->postinc ? "+]" : "]",
2474 cris_alu_m_alloc_temps(t);
2475 insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]);
2476 cris_cc_mask(dc, CC_MASK_NZVC);
2477 cris_alu(dc, CC_OP_CMP,
2478 cpu_R[dc->op2], cpu_R[dc->op2], t[1],
2480 do_postinc(dc, memsize);
2481 cris_alu_m_free_temps(t);
2485 static unsigned int dec_cmp_m(DisasContext *dc)
2488 int memsize = memsize_zz(dc);
2490 DIS(fprintf (logfile, "cmp.%c [$r%u%s, $r%u\n",
2491 memsize_char(memsize),
2492 dc->op1, dc->postinc ? "+]" : "]",
2495 cris_alu_m_alloc_temps(t);
2496 insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
2497 cris_cc_mask(dc, CC_MASK_NZVC);
2498 cris_alu(dc, CC_OP_CMP,
2499 cpu_R[dc->op2], cpu_R[dc->op2], t[1],
2501 do_postinc(dc, memsize);
2502 cris_alu_m_free_temps(t);
2506 static unsigned int dec_test_m(DisasContext *dc)
2509 int memsize = memsize_zz(dc);
2511 DIS(fprintf (logfile, "test.%d [$r%u%s] op2=%x\n",
2512 memsize_char(memsize),
2513 dc->op1, dc->postinc ? "+]" : "]",
2516 cris_evaluate_flags(dc);
2518 cris_alu_m_alloc_temps(t);
2519 insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
2520 cris_cc_mask(dc, CC_MASK_NZ);
2521 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3);
2523 cris_alu(dc, CC_OP_CMP,
2524 cpu_R[dc->op2], t[1], tcg_const_tl(0), memsize_zz(dc));
2525 do_postinc(dc, memsize);
2526 cris_alu_m_free_temps(t);
2530 static unsigned int dec_and_m(DisasContext *dc)
2533 int memsize = memsize_zz(dc);
2535 DIS(fprintf (logfile, "and.%d [$r%u%s, $r%u\n",
2536 memsize_char(memsize),
2537 dc->op1, dc->postinc ? "+]" : "]",
2540 cris_alu_m_alloc_temps(t);
2541 insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
2542 cris_cc_mask(dc, CC_MASK_NZ);
2543 cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
2544 do_postinc(dc, memsize);
2545 cris_alu_m_free_temps(t);
2549 static unsigned int dec_add_m(DisasContext *dc)
2552 int memsize = memsize_zz(dc);
2554 DIS(fprintf (logfile, "add.%d [$r%u%s, $r%u\n",
2555 memsize_char(memsize),
2556 dc->op1, dc->postinc ? "+]" : "]",
2559 cris_alu_m_alloc_temps(t);
2560 insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
2561 cris_cc_mask(dc, CC_MASK_NZVC);
2562 cris_alu(dc, CC_OP_ADD,
2563 cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
2564 do_postinc(dc, memsize);
2565 cris_alu_m_free_temps(t);
2569 static unsigned int dec_addo_m(DisasContext *dc)
2572 int memsize = memsize_zz(dc);
2574 DIS(fprintf (logfile, "add.%d [$r%u%s, $r%u\n",
2575 memsize_char(memsize),
2576 dc->op1, dc->postinc ? "+]" : "]",
2579 cris_alu_m_alloc_temps(t);
2580 insn_len = dec_prep_alu_m(dc, 1, memsize, t[0], t[1]);
2581 cris_cc_mask(dc, 0);
2582 cris_alu(dc, CC_OP_ADD, cpu_R[R_ACR], t[0], t[1], 4);
2583 do_postinc(dc, memsize);
2584 cris_alu_m_free_temps(t);
2588 static unsigned int dec_bound_m(DisasContext *dc)
2591 int memsize = memsize_zz(dc);
2593 DIS(fprintf (logfile, "bound.%d [$r%u%s, $r%u\n",
2594 memsize_char(memsize),
2595 dc->op1, dc->postinc ? "+]" : "]",
2598 l[0] = tcg_temp_local_new();
2599 l[1] = tcg_temp_local_new();
2600 insn_len = dec_prep_alu_m(dc, 0, memsize, l[0], l[1]);
2601 cris_cc_mask(dc, CC_MASK_NZ);
2602 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], l[0], l[1], 4);
2603 do_postinc(dc, memsize);
2604 tcg_temp_free(l[0]);
2605 tcg_temp_free(l[1]);
2609 static unsigned int dec_addc_mr(DisasContext *dc)
2613 DIS(fprintf (logfile, "addc [$r%u%s, $r%u\n",
2614 dc->op1, dc->postinc ? "+]" : "]",
2617 cris_evaluate_flags(dc);
2618 cris_alu_m_alloc_temps(t);
2619 insn_len = dec_prep_alu_m(dc, 0, 4, t[0], t[1]);
2620 cris_cc_mask(dc, CC_MASK_NZVC);
2621 cris_alu(dc, CC_OP_ADDC, cpu_R[dc->op2], t[0], t[1], 4);
2623 cris_alu_m_free_temps(t);
2627 static unsigned int dec_sub_m(DisasContext *dc)
2630 int memsize = memsize_zz(dc);
2632 DIS(fprintf (logfile, "sub.%c [$r%u%s, $r%u ir=%x zz=%x\n",
2633 memsize_char(memsize),
2634 dc->op1, dc->postinc ? "+]" : "]",
2635 dc->op2, dc->ir, dc->zzsize));
2637 cris_alu_m_alloc_temps(t);
2638 insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
2639 cris_cc_mask(dc, CC_MASK_NZVC);
2640 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], memsize);
2641 do_postinc(dc, memsize);
2642 cris_alu_m_free_temps(t);
2646 static unsigned int dec_or_m(DisasContext *dc)
2649 int memsize = memsize_zz(dc);
2651 DIS(fprintf (logfile, "or.%d [$r%u%s, $r%u pc=%x\n",
2652 memsize_char(memsize),
2653 dc->op1, dc->postinc ? "+]" : "]",
2656 cris_alu_m_alloc_temps(t);
2657 insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
2658 cris_cc_mask(dc, CC_MASK_NZ);
2659 cris_alu(dc, CC_OP_OR,
2660 cpu_R[dc->op2], t[0], t[1], memsize_zz(dc));
2661 do_postinc(dc, memsize);
2662 cris_alu_m_free_temps(t);
2666 static unsigned int dec_move_mp(DisasContext *dc)
2669 int memsize = memsize_zz(dc);
2672 DIS(fprintf (logfile, "move.%c [$r%u%s, $p%u\n",
2673 memsize_char(memsize),
2675 dc->postinc ? "+]" : "]",
2678 cris_alu_m_alloc_temps(t);
2679 insn_len = dec_prep_alu_m(dc, 0, memsize, t[0], t[1]);
2680 cris_cc_mask(dc, 0);
2681 if (dc->op2 == PR_CCS) {
2682 cris_evaluate_flags(dc);
2683 if (dc->tb_flags & U_FLAG) {
2684 /* User space is not allowed to touch all flags. */
2685 tcg_gen_andi_tl(t[1], t[1], 0x39f);
2686 tcg_gen_andi_tl(t[0], cpu_PR[PR_CCS], ~0x39f);
2687 tcg_gen_or_tl(t[1], t[0], t[1]);
2691 t_gen_mov_preg_TN(dc, dc->op2, t[1]);
2693 do_postinc(dc, memsize);
2694 cris_alu_m_free_temps(t);
2698 static unsigned int dec_move_pm(DisasContext *dc)
2703 memsize = preg_sizes[dc->op2];
2705 DIS(fprintf (logfile, "move.%c $p%u, [$r%u%s\n",
2706 memsize_char(memsize),
2707 dc->op2, dc->op1, dc->postinc ? "+]" : "]"));
2709 /* prepare store. Address in T0, value in T1. */
2710 if (dc->op2 == PR_CCS)
2711 cris_evaluate_flags(dc);
2712 t0 = tcg_temp_new();
2713 t_gen_mov_TN_preg(t0, dc->op2);
2714 cris_flush_cc_state(dc);
2715 gen_store(dc, cpu_R[dc->op1], t0, memsize);
2718 cris_cc_mask(dc, 0);
2720 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize);
2724 static unsigned int dec_movem_mr(DisasContext *dc)
2730 int nr = dc->op2 + 1;
2732 DIS(fprintf (logfile, "movem [$r%u%s, $r%u\n", dc->op1,
2733 dc->postinc ? "+]" : "]", dc->op2));
2735 addr = tcg_temp_new();
2736 /* There are probably better ways of doing this. */
2737 cris_flush_cc_state(dc);
2738 for (i = 0; i < (nr >> 1); i++) {
2739 tmp[i] = tcg_temp_new_i64();
2740 tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8);
2741 gen_load64(dc, tmp[i], addr);
2744 tmp32 = tcg_temp_new_i32();
2745 tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8);
2746 gen_load(dc, tmp32, addr, 4, 0);
2748 tcg_temp_free(addr);
2750 for (i = 0; i < (nr >> 1); i++) {
2751 tcg_gen_trunc_i64_i32(cpu_R[i * 2], tmp[i]);
2752 tcg_gen_shri_i64(tmp[i], tmp[i], 32);
2753 tcg_gen_trunc_i64_i32(cpu_R[i * 2 + 1], tmp[i]);
2754 tcg_temp_free_i64(tmp[i]);
2757 tcg_gen_mov_tl(cpu_R[dc->op2], tmp32);
2758 tcg_temp_free(tmp32);
2761 /* writeback the updated pointer value. */
2763 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], nr * 4);
2765 /* gen_load might want to evaluate the previous insns flags. */
2766 cris_cc_mask(dc, 0);
2770 static unsigned int dec_movem_rm(DisasContext *dc)
2776 DIS(fprintf (logfile, "movem $r%u, [$r%u%s\n", dc->op2, dc->op1,
2777 dc->postinc ? "+]" : "]"));
2779 cris_flush_cc_state(dc);
2781 tmp = tcg_temp_new();
2782 addr = tcg_temp_new();
2783 tcg_gen_movi_tl(tmp, 4);
2784 tcg_gen_mov_tl(addr, cpu_R[dc->op1]);
2785 for (i = 0; i <= dc->op2; i++) {
2786 /* Displace addr. */
2787 /* Perform the store. */
2788 gen_store(dc, addr, cpu_R[i], 4);
2789 tcg_gen_add_tl(addr, addr, tmp);
2792 tcg_gen_mov_tl(cpu_R[dc->op1], addr);
2793 cris_cc_mask(dc, 0);
2795 tcg_temp_free(addr);
2799 static unsigned int dec_move_rm(DisasContext *dc)
2803 memsize = memsize_zz(dc);
2805 DIS(fprintf (logfile, "move.%d $r%u, [$r%u]\n",
2806 memsize, dc->op2, dc->op1));
2808 /* prepare store. */
2809 cris_flush_cc_state(dc);
2810 gen_store(dc, cpu_R[dc->op1], cpu_R[dc->op2], memsize);
2813 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize);
2814 cris_cc_mask(dc, 0);
2818 static unsigned int dec_lapcq(DisasContext *dc)
2820 DIS(fprintf (logfile, "lapcq %x, $r%u\n",
2821 dc->pc + dc->op1*2, dc->op2));
2822 cris_cc_mask(dc, 0);
2823 tcg_gen_movi_tl(cpu_R[dc->op2], dc->pc + dc->op1 * 2);
2827 static unsigned int dec_lapc_im(DisasContext *dc)
2835 cris_cc_mask(dc, 0);
2836 imm = ldl_code(dc->pc + 2);
2837 DIS(fprintf (logfile, "lapc 0x%x, $r%u\n", imm + dc->pc, dc->op2));
2841 t_gen_mov_reg_TN(rd, tcg_const_tl(pc));
2845 /* Jump to special reg. */
2846 static unsigned int dec_jump_p(DisasContext *dc)
2848 DIS(fprintf (logfile, "jump $p%u\n", dc->op2));
2850 if (dc->op2 == PR_CCS)
2851 cris_evaluate_flags(dc);
2852 t_gen_mov_TN_preg(env_btarget, dc->op2);
2853 /* rete will often have low bit set to indicate delayslot. */
2854 tcg_gen_andi_tl(env_btarget, env_btarget, ~1);
2855 cris_cc_mask(dc, 0);
2856 cris_prepare_jmp(dc, JMP_INDIRECT);
2860 /* Jump and save. */
2861 static unsigned int dec_jas_r(DisasContext *dc)
2863 DIS(fprintf (logfile, "jas $r%u, $p%u\n", dc->op1, dc->op2));
2864 cris_cc_mask(dc, 0);
2865 /* Store the return address in Pd. */
2866 tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]);
2869 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4));
2871 cris_prepare_jmp(dc, JMP_INDIRECT);
2875 static unsigned int dec_jas_im(DisasContext *dc)
2879 imm = ldl_code(dc->pc + 2);
2881 DIS(fprintf (logfile, "jas 0x%x\n", imm));
2882 cris_cc_mask(dc, 0);
2883 /* Store the return address in Pd. */
2884 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8));
2887 cris_prepare_jmp(dc, JMP_DIRECT);
2891 static unsigned int dec_jasc_im(DisasContext *dc)
2895 imm = ldl_code(dc->pc + 2);
2897 DIS(fprintf (logfile, "jasc 0x%x\n", imm));
2898 cris_cc_mask(dc, 0);
2899 /* Store the return address in Pd. */
2900 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8 + 4));
2903 cris_prepare_jmp(dc, JMP_DIRECT);
2907 static unsigned int dec_jasc_r(DisasContext *dc)
2909 DIS(fprintf (logfile, "jasc_r $r%u, $p%u\n", dc->op1, dc->op2));
2910 cris_cc_mask(dc, 0);
2911 /* Store the return address in Pd. */
2912 tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]);
2913 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4 + 4));
2914 cris_prepare_jmp(dc, JMP_INDIRECT);
2918 static unsigned int dec_bcc_im(DisasContext *dc)
2921 uint32_t cond = dc->op2;
2923 offset = ldsw_code(dc->pc + 2);
2925 DIS(fprintf (logfile, "b%s %d pc=%x dst=%x\n",
2926 cc_name(cond), offset,
2927 dc->pc, dc->pc + offset));
2929 cris_cc_mask(dc, 0);
2930 /* op2 holds the condition-code. */
2931 cris_prepare_cc_branch (dc, offset, cond);
2935 static unsigned int dec_bas_im(DisasContext *dc)
2940 simm = ldl_code(dc->pc + 2);
2942 DIS(fprintf (logfile, "bas 0x%x, $p%u\n", dc->pc + simm, dc->op2));
2943 cris_cc_mask(dc, 0);
2944 /* Store the return address in Pd. */
2945 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8));
2947 dc->jmp_pc = dc->pc + simm;
2948 cris_prepare_jmp(dc, JMP_DIRECT);
2952 static unsigned int dec_basc_im(DisasContext *dc)
2955 simm = ldl_code(dc->pc + 2);
2957 DIS(fprintf (logfile, "basc 0x%x, $p%u\n", dc->pc + simm, dc->op2));
2958 cris_cc_mask(dc, 0);
2959 /* Store the return address in Pd. */
2960 t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 12));
2962 dc->jmp_pc = dc->pc + simm;
2963 cris_prepare_jmp(dc, JMP_DIRECT);
2967 static unsigned int dec_rfe_etc(DisasContext *dc)
2969 cris_cc_mask(dc, 0);
2971 if (dc->op2 == 15) /* ignore halt. */
2974 switch (dc->op2 & 7) {
2977 DIS(fprintf(logfile, "rfe\n"));
2978 cris_evaluate_flags(dc);
2980 dc->is_jmp = DISAS_UPDATE;
2984 DIS(fprintf(logfile, "rfn\n"));
2985 cris_evaluate_flags(dc);
2987 dc->is_jmp = DISAS_UPDATE;
2990 DIS(fprintf(logfile, "break %d\n", dc->op1));
2991 cris_evaluate_flags (dc);
2993 tcg_gen_movi_tl(env_pc, dc->pc + 2);
2995 /* Breaks start at 16 in the exception vector. */
2996 t_gen_mov_env_TN(trap_vector,
2997 tcg_const_tl(dc->op1 + 16));
2998 t_gen_raise_exception(EXCP_BREAK);
2999 dc->is_jmp = DISAS_UPDATE;
3002 printf ("op2=%x\n", dc->op2);
3010 static unsigned int dec_ftag_fidx_d_m(DisasContext *dc)
3015 static unsigned int dec_ftag_fidx_i_m(DisasContext *dc)
3020 static unsigned int dec_null(DisasContext *dc)
3022 printf ("unknown insn pc=%x opc=%x op1=%x op2=%x\n",
3023 dc->pc, dc->opcode, dc->op1, dc->op2);
3029 static struct decoder_info {
3034 unsigned int (*dec)(DisasContext *dc);
3036 /* Order matters here. */
3037 {DEC_MOVEQ, dec_moveq},
3038 {DEC_BTSTQ, dec_btstq},
3039 {DEC_CMPQ, dec_cmpq},
3040 {DEC_ADDOQ, dec_addoq},
3041 {DEC_ADDQ, dec_addq},
3042 {DEC_SUBQ, dec_subq},
3043 {DEC_ANDQ, dec_andq},
3045 {DEC_ASRQ, dec_asrq},
3046 {DEC_LSLQ, dec_lslq},
3047 {DEC_LSRQ, dec_lsrq},
3048 {DEC_BCCQ, dec_bccq},
3050 {DEC_BCC_IM, dec_bcc_im},
3051 {DEC_JAS_IM, dec_jas_im},
3052 {DEC_JAS_R, dec_jas_r},
3053 {DEC_JASC_IM, dec_jasc_im},
3054 {DEC_JASC_R, dec_jasc_r},
3055 {DEC_BAS_IM, dec_bas_im},
3056 {DEC_BASC_IM, dec_basc_im},
3057 {DEC_JUMP_P, dec_jump_p},
3058 {DEC_LAPC_IM, dec_lapc_im},
3059 {DEC_LAPCQ, dec_lapcq},
3061 {DEC_RFE_ETC, dec_rfe_etc},
3062 {DEC_ADDC_MR, dec_addc_mr},
3064 {DEC_MOVE_MP, dec_move_mp},
3065 {DEC_MOVE_PM, dec_move_pm},
3066 {DEC_MOVEM_MR, dec_movem_mr},
3067 {DEC_MOVEM_RM, dec_movem_rm},
3068 {DEC_MOVE_PR, dec_move_pr},
3069 {DEC_SCC_R, dec_scc_r},
3070 {DEC_SETF, dec_setclrf},
3071 {DEC_CLEARF, dec_setclrf},
3073 {DEC_MOVE_SR, dec_move_sr},
3074 {DEC_MOVE_RP, dec_move_rp},
3075 {DEC_SWAP_R, dec_swap_r},
3076 {DEC_ABS_R, dec_abs_r},
3077 {DEC_LZ_R, dec_lz_r},
3078 {DEC_MOVE_RS, dec_move_rs},
3079 {DEC_BTST_R, dec_btst_r},
3080 {DEC_ADDC_R, dec_addc_r},
3082 {DEC_DSTEP_R, dec_dstep_r},
3083 {DEC_XOR_R, dec_xor_r},
3084 {DEC_MCP_R, dec_mcp_r},
3085 {DEC_CMP_R, dec_cmp_r},
3087 {DEC_ADDI_R, dec_addi_r},
3088 {DEC_ADDI_ACR, dec_addi_acr},
3090 {DEC_ADD_R, dec_add_r},
3091 {DEC_SUB_R, dec_sub_r},
3093 {DEC_ADDU_R, dec_addu_r},
3094 {DEC_ADDS_R, dec_adds_r},
3095 {DEC_SUBU_R, dec_subu_r},
3096 {DEC_SUBS_R, dec_subs_r},
3097 {DEC_LSL_R, dec_lsl_r},
3099 {DEC_AND_R, dec_and_r},
3100 {DEC_OR_R, dec_or_r},
3101 {DEC_BOUND_R, dec_bound_r},
3102 {DEC_ASR_R, dec_asr_r},
3103 {DEC_LSR_R, dec_lsr_r},
3105 {DEC_MOVU_R, dec_movu_r},
3106 {DEC_MOVS_R, dec_movs_r},
3107 {DEC_NEG_R, dec_neg_r},
3108 {DEC_MOVE_R, dec_move_r},
3110 {DEC_FTAG_FIDX_I_M, dec_ftag_fidx_i_m},
3111 {DEC_FTAG_FIDX_D_M, dec_ftag_fidx_d_m},
3113 {DEC_MULS_R, dec_muls_r},
3114 {DEC_MULU_R, dec_mulu_r},
3116 {DEC_ADDU_M, dec_addu_m},
3117 {DEC_ADDS_M, dec_adds_m},
3118 {DEC_SUBU_M, dec_subu_m},
3119 {DEC_SUBS_M, dec_subs_m},
3121 {DEC_CMPU_M, dec_cmpu_m},
3122 {DEC_CMPS_M, dec_cmps_m},
3123 {DEC_MOVU_M, dec_movu_m},
3124 {DEC_MOVS_M, dec_movs_m},
3126 {DEC_CMP_M, dec_cmp_m},
3127 {DEC_ADDO_M, dec_addo_m},
3128 {DEC_BOUND_M, dec_bound_m},
3129 {DEC_ADD_M, dec_add_m},
3130 {DEC_SUB_M, dec_sub_m},
3131 {DEC_AND_M, dec_and_m},
3132 {DEC_OR_M, dec_or_m},
3133 {DEC_MOVE_RM, dec_move_rm},
3134 {DEC_TEST_M, dec_test_m},
3135 {DEC_MOVE_MR, dec_move_mr},
3140 static inline unsigned int
3141 cris_decoder(DisasContext *dc)
3143 unsigned int insn_len = 2;
3146 if (unlikely(loglevel & CPU_LOG_TB_OP))
3147 tcg_gen_debug_insn_start(dc->pc);
3149 /* Load a halfword onto the instruction register. */
3150 dc->ir = lduw_code(dc->pc);
3152 /* Now decode it. */
3153 dc->opcode = EXTRACT_FIELD(dc->ir, 4, 11);
3154 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 3);
3155 dc->op2 = EXTRACT_FIELD(dc->ir, 12, 15);
3156 dc->zsize = EXTRACT_FIELD(dc->ir, 4, 4);
3157 dc->zzsize = EXTRACT_FIELD(dc->ir, 4, 5);
3158 dc->postinc = EXTRACT_FIELD(dc->ir, 10, 10);
3160 /* Large switch for all insns. */
3161 for (i = 0; i < ARRAY_SIZE(decinfo); i++) {
3162 if ((dc->opcode & decinfo[i].mask) == decinfo[i].bits)
3164 insn_len = decinfo[i].dec(dc);
3169 #if !defined(CONFIG_USER_ONLY)
3170 /* Single-stepping ? */
3171 if (dc->tb_flags & S_FLAG) {
3174 l1 = gen_new_label();
3175 tcg_gen_brcondi_tl(TCG_COND_NE, cpu_PR[PR_SPC], dc->pc, l1);
3176 /* We treat SPC as a break with an odd trap vector. */
3177 cris_evaluate_flags (dc);
3178 t_gen_mov_env_TN(trap_vector, tcg_const_tl(3));
3179 tcg_gen_movi_tl(env_pc, dc->pc + insn_len);
3180 tcg_gen_movi_tl(cpu_PR[PR_SPC], dc->pc + insn_len);
3181 t_gen_raise_exception(EXCP_BREAK);
3188 static void check_breakpoint(CPUState *env, DisasContext *dc)
3192 if (unlikely(!TAILQ_EMPTY(&env->breakpoints))) {
3193 TAILQ_FOREACH(bp, &env->breakpoints, entry) {
3194 if (bp->pc == dc->pc) {
3195 cris_evaluate_flags (dc);
3196 tcg_gen_movi_tl(env_pc, dc->pc);
3197 t_gen_raise_exception(EXCP_DEBUG);
3198 dc->is_jmp = DISAS_UPDATE;
3206 * Delay slots on QEMU/CRIS.
3208 * If an exception hits on a delayslot, the core will let ERP (the Exception
3209 * Return Pointer) point to the branch (the previous) insn and set the lsb to
3210 * to give SW a hint that the exception actually hit on the dslot.
3212 * CRIS expects all PC addresses to be 16-bit aligned. The lsb is ignored by
3213 * the core and any jmp to an odd addresses will mask off that lsb. It is
3214 * simply there to let sw know there was an exception on a dslot.
3216 * When the software returns from an exception, the branch will re-execute.
3217 * On QEMU care needs to be taken when a branch+delayslot sequence is broken
3218 * and the branch and delayslot dont share pages.
3220 * The TB contaning the branch insn will set up env->btarget and evaluate
3221 * env->btaken. When the translation loop exits we will note that the branch
3222 * sequence is broken and let env->dslot be the size of the branch insn (those
3225 * The TB contaning the delayslot will have the PC of its real insn (i.e no lsb
3226 * set). It will also expect to have env->dslot setup with the size of the
3227 * delay slot so that env->pc - env->dslot point to the branch insn. This TB
3228 * will execute the dslot and take the branch, either to btarget or just one
3231 * When exceptions occur, we check for env->dslot in do_interrupt to detect
3232 * broken branch sequences and setup $erp accordingly (i.e let it point to the
3233 * branch and set lsb). Then env->dslot gets cleared so that the exception
3234 * handler can enter. When returning from exceptions (jump $erp) the lsb gets
3235 * masked off and we will reexecute the branch insn.
3239 /* generate intermediate code for basic block 'tb'. */
3241 gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb,
3244 uint16_t *gen_opc_end;
3246 unsigned int insn_len;
3248 struct DisasContext ctx;
3249 struct DisasContext *dc = &ctx;
3250 uint32_t next_page_start;
3258 /* Odd PC indicates that branch is rexecuting due to exception in the
3259 * delayslot, like in real hw.
3261 pc_start = tb->pc & ~1;
3265 gen_opc_end = gen_opc_buf + OPC_MAX_SIZE;
3267 dc->is_jmp = DISAS_NEXT;
3270 dc->singlestep_enabled = env->singlestep_enabled;
3271 dc->flags_uptodate = 1;
3272 dc->flagx_known = 1;
3273 dc->flags_x = tb->flags & X_FLAG;
3274 dc->cc_x_uptodate = 0;
3278 cris_update_cc_op(dc, CC_OP_FLAGS, 4);
3279 dc->cc_size_uptodate = -1;
3281 /* Decode TB flags. */
3282 dc->tb_flags = tb->flags & (S_FLAG | P_FLAG | U_FLAG | X_FLAG);
3283 dc->delayed_branch = !!(tb->flags & 7);
3284 if (dc->delayed_branch)
3285 dc->jmp = JMP_INDIRECT;
3287 dc->jmp = JMP_NOJMP;
3289 dc->cpustate_changed = 0;
3291 if (loglevel & CPU_LOG_TB_IN_ASM) {
3293 "srch=%d pc=%x %x flg=%llx bt=%x ds=%u ccs=%x\n"
3299 search_pc, dc->pc, dc->ppc,
3300 (unsigned long long)tb->flags,
3301 env->btarget, (unsigned)tb->flags & 7,
3303 env->pregs[PR_PID], env->pregs[PR_USP],
3304 env->regs[0], env->regs[1], env->regs[2], env->regs[3],
3305 env->regs[4], env->regs[5], env->regs[6], env->regs[7],
3306 env->regs[8], env->regs[9],
3307 env->regs[10], env->regs[11],
3308 env->regs[12], env->regs[13],
3309 env->regs[14], env->regs[15]);
3310 fprintf(logfile, "--------------\n");
3311 fprintf(logfile, "IN: %s\n", lookup_symbol(pc_start));
3314 next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
3317 max_insns = tb->cflags & CF_COUNT_MASK;
3319 max_insns = CF_COUNT_MASK;
3324 check_breakpoint(env, dc);
3327 j = gen_opc_ptr - gen_opc_buf;
3331 gen_opc_instr_start[lj++] = 0;
3333 if (dc->delayed_branch == 1)
3334 gen_opc_pc[lj] = dc->ppc | 1;
3336 gen_opc_pc[lj] = dc->pc;
3337 gen_opc_instr_start[lj] = 1;
3338 gen_opc_icount[lj] = num_insns;
3342 DIS(fprintf(logfile, "%8.8x:\t", dc->pc));
3344 if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO))
3348 insn_len = cris_decoder(dc);
3352 cris_clear_x_flag(dc);
3355 /* Check for delayed branches here. If we do it before
3356 actually generating any host code, the simulator will just
3357 loop doing nothing for on this program location. */
3358 if (dc->delayed_branch) {
3359 dc->delayed_branch--;
3360 if (dc->delayed_branch == 0)
3363 t_gen_mov_env_TN(dslot,
3365 if (dc->jmp == JMP_DIRECT) {
3366 dc->is_jmp = DISAS_NEXT;
3368 t_gen_cc_jmp(env_btarget,
3369 tcg_const_tl(dc->pc));
3370 dc->is_jmp = DISAS_JUMP;
3376 /* If we are rexecuting a branch due to exceptions on
3377 delay slots dont break. */
3378 if (!(tb->pc & 1) && env->singlestep_enabled)
3380 } while (!dc->is_jmp && !dc->cpustate_changed
3381 && gen_opc_ptr < gen_opc_end
3382 && (dc->pc < next_page_start)
3383 && num_insns < max_insns);
3386 if (dc->jmp == JMP_DIRECT && !dc->delayed_branch)
3389 if (tb->cflags & CF_LAST_IO)
3391 /* Force an update if the per-tb cpu state has changed. */
3392 if (dc->is_jmp == DISAS_NEXT
3393 && (dc->cpustate_changed || !dc->flagx_known
3394 || (dc->flags_x != (tb->flags & X_FLAG)))) {
3395 dc->is_jmp = DISAS_UPDATE;
3396 tcg_gen_movi_tl(env_pc, npc);
3398 /* Broken branch+delayslot sequence. */
3399 if (dc->delayed_branch == 1) {
3400 /* Set env->dslot to the size of the branch insn. */
3401 t_gen_mov_env_TN(dslot, tcg_const_tl(dc->pc - dc->ppc));
3402 cris_store_direct_jmp(dc);
3405 cris_evaluate_flags (dc);
3407 if (unlikely(env->singlestep_enabled)) {
3408 if (dc->is_jmp == DISAS_NEXT)
3409 tcg_gen_movi_tl(env_pc, npc);
3410 t_gen_raise_exception(EXCP_DEBUG);
3412 switch(dc->is_jmp) {
3414 gen_goto_tb(dc, 1, npc);
3419 /* indicate that the hash table must be used
3420 to find the next TB */
3425 /* nothing more to generate */
3429 gen_icount_end(tb, num_insns);
3430 *gen_opc_ptr = INDEX_op_end;
3432 j = gen_opc_ptr - gen_opc_buf;
3435 gen_opc_instr_start[lj++] = 0;
3437 tb->size = dc->pc - pc_start;
3438 tb->icount = num_insns;
3443 if (loglevel & CPU_LOG_TB_IN_ASM) {
3444 target_disas(logfile, pc_start, dc->pc - pc_start, 0);
3445 fprintf(logfile, "\nisize=%d osize=%zd\n",
3446 dc->pc - pc_start, gen_opc_ptr - gen_opc_buf);
3452 void gen_intermediate_code (CPUState *env, struct TranslationBlock *tb)
3454 gen_intermediate_code_internal(env, tb, 0);
3457 void gen_intermediate_code_pc (CPUState *env, struct TranslationBlock *tb)
3459 gen_intermediate_code_internal(env, tb, 1);
3462 void cpu_dump_state (CPUState *env, FILE *f,
3463 int (*cpu_fprintf)(FILE *f, const char *fmt, ...),
3472 cpu_fprintf(f, "PC=%x CCS=%x btaken=%d btarget=%x\n"
3473 "cc_op=%d cc_src=%d cc_dest=%d cc_result=%x cc_mask=%x\n",
3474 env->pc, env->pregs[PR_CCS], env->btaken, env->btarget,
3476 env->cc_src, env->cc_dest, env->cc_result, env->cc_mask);
3479 for (i = 0; i < 16; i++) {
3480 cpu_fprintf(f, "r%2.2d=%8.8x ", i, env->regs[i]);
3481 if ((i + 1) % 4 == 0)
3482 cpu_fprintf(f, "\n");
3484 cpu_fprintf(f, "\nspecial regs:\n");
3485 for (i = 0; i < 16; i++) {
3486 cpu_fprintf(f, "p%2.2d=%8.8x ", i, env->pregs[i]);
3487 if ((i + 1) % 4 == 0)
3488 cpu_fprintf(f, "\n");
3490 srs = env->pregs[PR_SRS];
3491 cpu_fprintf(f, "\nsupport function regs bank %x:\n", srs);
3493 for (i = 0; i < 16; i++) {
3494 cpu_fprintf(f, "s%2.2d=%8.8x ",
3495 i, env->sregs[srs][i]);
3496 if ((i + 1) % 4 == 0)
3497 cpu_fprintf(f, "\n");
3500 cpu_fprintf(f, "\n\n");
3504 CPUCRISState *cpu_cris_init (const char *cpu_model)
3507 static int tcg_initialized = 0;
3510 env = qemu_mallocz(sizeof(CPUCRISState));
3517 if (tcg_initialized)
3520 tcg_initialized = 1;
3522 cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
3523 cc_x = tcg_global_mem_new(TCG_AREG0,
3524 offsetof(CPUState, cc_x), "cc_x");
3525 cc_src = tcg_global_mem_new(TCG_AREG0,
3526 offsetof(CPUState, cc_src), "cc_src");
3527 cc_dest = tcg_global_mem_new(TCG_AREG0,
3528 offsetof(CPUState, cc_dest),
3530 cc_result = tcg_global_mem_new(TCG_AREG0,
3531 offsetof(CPUState, cc_result),
3533 cc_op = tcg_global_mem_new(TCG_AREG0,
3534 offsetof(CPUState, cc_op), "cc_op");
3535 cc_size = tcg_global_mem_new(TCG_AREG0,
3536 offsetof(CPUState, cc_size),
3538 cc_mask = tcg_global_mem_new(TCG_AREG0,
3539 offsetof(CPUState, cc_mask),
3542 env_pc = tcg_global_mem_new(TCG_AREG0,
3543 offsetof(CPUState, pc),
3545 env_btarget = tcg_global_mem_new(TCG_AREG0,
3546 offsetof(CPUState, btarget),
3548 env_btaken = tcg_global_mem_new(TCG_AREG0,
3549 offsetof(CPUState, btaken),
3551 for (i = 0; i < 16; i++) {
3552 cpu_R[i] = tcg_global_mem_new(TCG_AREG0,
3553 offsetof(CPUState, regs[i]),
3556 for (i = 0; i < 16; i++) {
3557 cpu_PR[i] = tcg_global_mem_new(TCG_AREG0,
3558 offsetof(CPUState, pregs[i]),
3562 #define GEN_HELPER 2
3568 void cpu_reset (CPUCRISState *env)
3570 memset(env, 0, offsetof(CPUCRISState, breakpoints));
3573 env->pregs[PR_VR] = 32;
3574 #if defined(CONFIG_USER_ONLY)
3575 /* start in user mode with interrupts enabled. */
3576 env->pregs[PR_CCS] |= U_FLAG | I_FLAG;
3578 env->pregs[PR_CCS] = 0;
3582 void gen_pc_load(CPUState *env, struct TranslationBlock *tb,
3583 unsigned long searched_pc, int pc_pos, void *puc)
3585 env->pc = gen_opc_pc[pc_pos];